单项选择题Which of the following is CORRECT about negativity bias in brain
单项选择题The European Recovery Program, an American program to aid Europe after the WWII, is also called
单项选择题According to lain Duncan Smith, many Englishmen are unemployed NOT because
单项选择题It can be inferred from the passage that Barack Obama
单项选择题The word scourge in Paragraph 4 probably means